[Leakage from the connecting portion between the anesthesia machine and vaporizer].

We recently encountered three cases of the leakage from the connecting portion of sevoflurane vaporizer in Fabius Tiro produced by Drager company, and in one case of those, oxygen saturation decreased. The connecting portion had leakage merely in the contact with the fixture of the monitor, because of the structure easily displaced by an external force. Further, it was difficult to detect the leakage due to the ability to correct the insufficient supply of fresh gas by taking in air. We hope a reform of the connecting portion and an alarm to inform it if the anesthesia machine detects the leakage.